Counter Current Mechanism in Kidneys — NEET Biology
📚 Practice ConceptGive a brief account of the counter current mechanism.
Assertion (A): Both Henle’s loop and vasa recta contribute to the counter-current mechanism. Reason (R): The flow of filtrate in Henle’s loop is counter-current while the flow of blood in vasa recta follows a parallel pattern.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT states “The flow of filtrate in the two limbs of Henle’s loop is in opposite directions and thus forms a counter current. The flow of blood through the two limbs of vasa recta is also in a counter current pattern.” The Assertion is true - both contribute to counter-current mechanism. The Reason is false - both have counter-current flow, not parallel flow in vasa recta.
What does NCERT say about Give brief account counter?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.